uidriver/glfw: Set No-API when creating a hidden window first

GLFW tries to create an OpenGL context by default when creating a
window. This is not necessary when OpenGL is not used. This is an
optimization by skipping to create an OpenGL context if possible.

Fixes hajimehoshi#1237

Add Daniil Rutskiy to AUTHORS

shareable: Use as big backends as possible

As the shader hack is removed at d74f7d3,
any sizes of textures should work regardless of the float precision.

shareable: Bug fix: wrong size calculation

The size calculation must consider the paddings.

Fixes hajimehoshi#1217

graphicsdriver/metal: Optimization

graphicsdriver/opengl: Fix comments

uidriver/glfw: Bug fix: SetVsyncEnabled(false) did not work before th…

…e main loop

Fixes hajimehoshi#1197

shader: Add more shadowing tests

restorable: Bug fix: Fill didn't invalidate its dependencies

Fixes hajimehoshi#1170

examples: Use RunGame

Updates hajimehoshi#1111